{

private static int _num = 0;

private static String _ogrSampleDataset;

public static String OgrSampleDataSet

{

get { return _ogrSampleDataset; }

}

public static Map InitializeMap(float angle)

{

switch (_num++ % 3)

{

case 0:

return InitializeMapinfo(angle);

case 1:

return InitializeS57(angle);

case 2:

return InitializeDXF(angle);

}

return InitializeMapinfo(angle);

}

private static Map InitializeDXF(float angle)

{

Map map = new Map();

//Set the datasource to a shapefile in the App_data folder

Ogr provider;

try

{

provider = new Ogr("GeoData/SampleDXF.dxf",0);

}

catch (TypeInitializationException ex)

{

if (ex.Message == "The type initializer for 'OSGeo.OGR.Ogr' threw an exception.")

{

var asm = System.Reflection.Assembly.GetAssembly(typeof(OSGeo.GDAL.Gdal)).GetName();

throw new System.Exception(

string.Format(

"The application threw a PINVOKE exception. You probably need to copy the unmanaged dll's to your bin directory. " +

"They are a part of the GDAL NuGet package v{0}.",

asm.Version.ToString(3)));

}

throw;

}

VectorLayer lay = new VectorLayer("SampleDXF", provider);

map.Layers.Add(lay);

map.ZoomToExtents();

Matrix mat = new Matrix();

mat.RotateAt(angle, map.WorldToImage(map.Center));

map.MapTransform = mat;

_ogrSampleDataset = "SampleDXF";

return map;

}

private static Map InitializeS57(float angle)

{

//Initialize a new map of size 'imagesize'

Map map = new Map();

//Set the datasource to a shapefile in the App_data folder

Ogr provider;

try

{

provider = new Ogr("GeoData/S57/US5TX51M.000");

}

catch (TypeInitializationException ex)

{

if (ex.Message == "The type initializer for 'OSGeo.OGR.Ogr' threw an exception.")

{

var asm = System.Reflection.Assembly.GetAssembly(typeof(OSGeo.GDAL.Gdal)).GetName();

throw new System.Exception(

string.Format(

"The application threw a PINVOKE exception. You probably need to copy the unmanaged dll's to your bin directory. " +

"They are a part of the GDAL NuGet package v{0}.",

asm.Version.ToString(3)));

}

throw;

}

VectorLayer lay;

Random rnd = new Random(9);

for (Int32 i = provider.NumberOfLayers - 1; i >= 0; i--)

{

Ogr prov = new Ogr("GeoData/S57/US5TX51M.000", i);

if (!prov.IsFeatureDataLayer) continue;

string name = prov.LayerName;

System.Diagnostics.Debug.WriteLine(string.Format("Layer {0}: {1}", i, name));

//if (provider.GeometryType )

lay = new VectorLayer(string.Format("Layer_{0}", name), prov);

if (prov.OgrGeometryTypeString.IndexOf("Polygon") > 0)

{

lay.Style.Fill =

new SolidBrush(Color.FromArgb(150, Convert.ToInt32(rnd.NextDouble() * 255),

Convert.ToInt32(rnd.NextDouble() * 255),

Convert.ToInt32(rnd.NextDouble() * 255)));

lay.Style.Outline =

new Pen(

Color.FromArgb(150, Convert.ToInt32(rnd.NextDouble() * 255),

Convert.ToInt32(rnd.NextDouble() * 255),

Convert.ToInt32(rnd.NextDouble() * 255)),

Convert.ToInt32(rnd.NextDouble() * 3));

lay.Style.EnableOutline = true;

}

else

{

lay.Style.Line =

new Pen(

Color.FromArgb(150, Convert.ToInt32(rnd.NextDouble()*255),

Convert.ToInt32(rnd.NextDouble()*255), Convert.ToInt32(rnd.NextDouble()*255)),

Convert.ToInt32(rnd.NextDouble()*3));

}

map.Layers.Add(lay);

}

_ogrSampleDataset = "S-57";

map.ZoomToExtents();

Matrix mat = new Matrix();

mat.RotateAt(angle, map.WorldToImage(map.Center));

map.MapTransform = mat;

return map;

}

private static Map InitializeMapinfo(float angle)

{

//Initialize a new map of size 'imagesize'

Map map = new Map();

//Set up the countries layer

VectorLayer layCountries = new VectorLayer("Countries");

//Set the datasource to a shapefile in the App_data folder

try

{

layCountries.DataSource = new Ogr("GeoData/MapInfo/countriesMapInfo.tab");

}

catch (TypeInitializationException ex)

{

if (ex.Message == "The type initializer for 'OSGeo.OGR.Ogr' threw an exception.")

{

var asm = System.Reflection.Assembly.GetAssembly(typeof(OSGeo.GDAL.Gdal)).GetName();

throw new System.Exception(

string.Format(

"The application threw a PINVOKE exception. You probably need to copy the unmanaged dll's to your bin directory. " +

"They are a part of the GDAL NuGet package v{0}.",

asm.Version.ToString(3)));

}

throw;

}

//Set fill-style to green

layCountries.Style.Fill = new SolidBrush(Color.Green);

//Set the polygons to have a black outline

layCountries.Style.Outline = Pens.Black;

layCountries.Style.EnableOutline = true;

layCountries.SRID = 4326;

//Set up a river layer

VectorLayer layRivers = new VectorLayer("Rivers");

//Set the datasource to a shapefile in the App_data folder

layRivers.DataSource = new Ogr("GeoData/MapInfo/riversMapInfo.tab");

//Define a blue 1px wide pen

layRivers.Style.Line = new Pen(Color.Blue, 1);

layRivers.SRID = 4326;

//Set up a river layer

VectorLayer layCities = new VectorLayer("Cities");

//Set the datasource to a shapefile in the App_data folder

layCities.DataSource = new Ogr("GeoData/MapInfo/citiesMapInfo.tab");

layCities.Style.SymbolScale = 0.8f;

layCities.MaxVisible = 40;

layCities.SRID = 4326;

//Set up a country label layer

LabelLayer layLabel = new LabelLayer("Country labels");

layLabel.DataSource = layCountries.DataSource;

layLabel.Enabled = true;

layLabel.LabelColumn = "Name";

layLabel.Style = new LabelStyle();

layLabel.Style.ForeColor = Color.White;

layLabel.Style.Font = new Font(FontFamily.GenericSerif, 12);

layLabel.Style.BackColor = new SolidBrush(Color.FromArgb(128, 255, 0, 0));

layLabel.MaxVisible = 90;

layLabel.MinVisible = 30;

layLabel.Style.HorizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Center;

layLabel.SRID = 4326;

layLabel.MultipartGeometryBehaviour = LabelLayer.MultipartGeometryBehaviourEnum.Largest;

//Set up a city label layer

LabelLayer layCityLabel = new LabelLayer("City labels");

layCityLabel.DataSource = layCities.DataSource;

layCityLabel.Enabled = true;

layCityLabel.LabelColumn = "Name";

layCityLabel.Style = new LabelStyle();

layCityLabel.Style.ForeColor = Color.Black;

layCityLabel.Style.Font = new Font(FontFamily.GenericSerif, 11);

layCityLabel.MaxVisible = layLabel.MinVisible;

layCityLabel.Style.HorizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Left;

layCityLabel.Style.VerticalAlignment = LabelStyle.VerticalAlignmentEnum.Bottom;

layCityLabel.Style.Offset = new PointF(3, 3);

layCityLabel.Style.Halo = new Pen(Color.Yellow, 2);

layCityLabel.TextRenderingHint = TextRenderingHint.AntiAlias;

layCityLabel.SmoothingMode = SmoothingMode.AntiAlias;

layCityLabel.SRID = 4326;

layCityLabel.LabelFilter = LabelCollisionDetection.ThoroughCollisionDetection;

layCityLabel.Style.CollisionDetection = true;

//Add the layers to the map object.

//The order we add them in are the order they are drawn, so we add the rivers last to put them on top

map.Layers.Add(layCountries);

map.Layers.Add(layRivers);

map.Layers.Add(layCities);

map.Layers.Add(layLabel);

map.Layers.Add(layCityLabel);

//limit the zoom to 360 degrees width

map.MaximumZoom = 360;

map.BackColor = Color.LightBlue;

map.ZoomToExtents(); // = 360;

map.Center = new Point(0, 0);

_ogrSampleDataset = "MapInfo";

Matrix mat = new Matrix();

mat.RotateAt(angle, map.WorldToImage(map.Center));

map.MapTransform = mat;

return map;

}

internal static Map InitializeMap(float angle, string[] filenames)

{

if (filenames == null)

return null;

var providers = new SharpMap.Data.Providers.Ogr[filenames.Length];

for (int i = 0; i < filenames.Length; i++)

{

providers[i] = new Ogr(filenames[i]);

}

var map = LayerTools.GetMapForProviders(providers);

Matrix mat = new Matrix();

mat.RotateAt(angle, map.WorldToImage(map.Center));

map.MapTransform = mat;

map.ZoomToExtents();

return map;

}